I keep my LEDS at about 12--14" but they don't give off the heat like yours. But my tent has settled out at a night time temp of 78 and a daytime at 82 or 83, but our days have been in the mid 90s.. My plants have acclimated to this temp range and don't seem to be affected by it. I keep a fan on in the tent and have fully opened 2 of the inlet screened vents to allow more air in.
As long as they continue upward growth, and the foliage looks healthy, let em run.